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Calibrating signal paths in RF test signals

Posted: 20 Jan 2009     Print Version  Bookmark and Share

Keywords:RF test system  measurement accuracy  calibration method  signal path 

In any RF test system, the ability to achieve instrument-port accuracy at the device under test (DUT) will improve measurement accuracy and repeatability. Unfortunately, the non-ideal nature of the cables, components and switches in the paths between the instruments and the DUT can degrade measurement accuracy. Vector or scalar calibration is usually required to characterise and correct for this loss of accuracy.

The proper calibration method depends on both the type of measurement and the signal path. This application note provides an overview of three approaches that can be used to calibrate RF signal paths and produce accurate, repeatable measurements. It's important to note that these calibrations are a complement to—and not a substitute for—the calibration of individual instruments within a system.

View the PDF document for more information.





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